Basic Chemistry MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Basic Chemistry, a fundamental topic in the field of Chemistry. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Basic Chemistry MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Basic Chemistry mcq questions that explore various aspects of Basic Chemistry problems. Each MCQ is crafted to challenge your understanding of Basic Chemistry principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Chemistry tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Basic Chemistry MCQs are your pathway to success in mastering this essential Chemistry topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Basic Chemistry. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

So, are you ready to put your Basic Chemistry knowledge to the test? Let's get started with our carefully curated MCQs!

Basic Chemistry MCQs | Page 21 of 45

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Q201.
Hydrolysis of peptides is aided through the enzyme

a.

urease

b.

trypsin

c.

amylase

d.

thrombokinase

Discuss
Answer: (b).trypsin
Q202.
The substrate must have the correct

a.

size to fit the active site of the enzyme only

b.

shape to fit the active site of the enzyme only

c.

order to fit in the active site

d.

size and shape to fit the active site of the enzyme

Discuss
Answer: (d).size and shape to fit the active site of the enzyme
Q203.
Of the given series of actions, action performed first is the

a.

substrate diffuses to the active site

b.

enzyme-substrate complex is binded

c.

amino acids may acts as nucleophiles

d.

products diffuse away from the active site

Discuss
Answer: (a).substrate diffuses to the active site
Q204.
Enzyme activity refers to the number of

a.

moles of enzymes converted to product per minute

b.

moles of substrate converted to product per minute

c.

substrate molecules reacted per enzyme per minute

d.

enzyme reacted on substrate molecule per minute

Discuss
Answer: (b).moles of substrate converted to product per minute
Q205.
The turnover number refers to the number of

a.

moles of enzymes converted to product per minute

b.

moles of substrate converted to product per minute

c.

substrate molecules reacted per enzyme per minute

d.

moles of enzymes consumed in the reaction

Discuss
Answer: (c).substrate molecules reacted per enzyme per minute
Q206.
After the substrate diffuses with the enzyme, the next action in series is the

a.

amino acids may acts as nucleophiles

b.

products diffuse away from the active site

c.

enzyme-substrate complex is binded

d.

product dissolves in capillaries and is carried away.

Discuss
Answer: (c).enzyme-substrate complex is binded
Q207.
Enzyme trypsin acts upon

a.

lysine residues in peptide bonds only

b.

arginine residues in peptide bonds only

c.

trypsin residues in peptide bonds

d.

lysine and arginine residues in peptide bonds

Discuss
Answer: (d).lysine and arginine residues in peptide bonds
Q208.
Which statement is incorrect about enzymes?

a.

they speed up reactions without being used up

b.

they raise the activation energy

c.

they are all large molecules

d.

they are action-specific

Discuss
Answer: (b).they raise the activation energy
Q209.
Consider the reaction: (NH₂)₂CO + H₂O → NH₃ + CO₂. The reaction is catalyzed by the enzyme

a.

amylase

b.

protease

c.

urease

d.

galactose

Discuss
Answer: (c).urease
Q210.
Consider the reaction: (NH₂)₂CO + H₂O → NH₃ + CO₂. Water in this reaction

a.

acts as a solvent

b.

helps to dissolve the residues away

c.

acts with the urea only after urea is bound to enzyme surface

d.

acts as a suspension

Discuss
Answer: (c).acts with the urea only after urea is bound to enzyme surface
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